package/foot: correct git download filename/hash
Fixes http://autobuild.buildroot.net/results/b5a7b55148244794d2a4e4534df41e1dcc19f735/
Commit be24ec40cde1 ("package/foot: change to git download to work around
codeberg archive issue") backported a commit to change to git download for
the foot package, but forgot to adjust the tarball filename and hash for the
download logic in 2024.02.x. Fix that.
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>